yeller = eval(input('请输入年份'))
if yeller < 0 :
    print('请输入正确的个份')
elif (yeller % 4 == 0 and yeller % 100 >0) or (yeller % 400 == 0):
    print('是润年')
else :
    print('是平年')

print (5//2)
print(5/2)